5251866 has 32 divisors (see below), whose sum is σ = 11543040. Its totient is φ = 1585584.

The previous prime is 5251859. The next prime is 5251877. The reversal of 5251866 is 6681525.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621 + ... + 3623.

It is an arithmetic number, because the mean of its divisors is an integer number (360720).

Almost surely, 2^5251866 is an apocalyptic number.

5251866 is an abundant number, since it is smaller than the sum of its proper divisors (6291174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5251866 is a wasteful number, since it uses less digits than its factorization.

5251866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050.

The product of its digits is 14400, while the sum is 33.

The square root of 5251866 is about 2291.6950058854. The cubic root of 5251866 is about 173.8219211250.

Subtracting from 5251866 its product of digits (14400), we obtain a triangular number (5237466 = T₃₂₃₆).

The spelling of 5251866 in words is "five million, two hundred fifty-one thousand, eight hundred sixty-six".